Happy Halloween. The Interval Trainer is ready to rumble.
For each interval, there's a low note, a high note, and the interval name. Two of these will be displayed, and the user must identify the third. You might have to name the interval between two notes or the note a certain interval above or below another note.
I wrote in a few special features including hands-free operation. (I like to eat a sammich will I study.) You can also select which notes and intervals will show up as well as the types of questions asked, tailoring it to exactly what you need to learn.